precipitate
gb/pɹɪsˈɪpɪtˌeɪt/ us/pɹɪsˈɪpɪtˌeɪt/
B2
英語
~ 9700
語義
0件の語義
動詞
formal
C1
action
1
cause something to happen suddenly
To make something happen very suddenly, or earlier than it was going to happen, especially something bad or serious.
用法パターン：
to precipitate [an event]
よくある間違い：
Learners sometimes think "precipitate" here is related to "rain" or "weather" because of the word "precipitation". In this common meaning, it does NOT mean "to make it rain"; it means "to cause an event, usually bad, to happen suddenly". Learners also sometimes use it for everyday small actions; it is mostly used for serious or important events (crises, conflicts, changes).
類義語
trigger (More common and slightly less formal; often used for both good and bad events, while "precipitate" is usually used for serious or negative events.)
対義語
avert (Means to prevent something bad from happening, while "precipitate" means to cause it to happen.)
コロケーション
precipitate a crisis
|precipitate a conflict
|precipitate a decline
|precipitate war
|precipitate change
|precipitate a scandal
テーマ
society
|politics
|conflict
|core_vocabulary
例文
- The government’s sudden announcement precipitated a constitutional crisis.
- His careless remarks precipitated a heated argument at the meeting.
- The collapse of the housing market precipitated a global financial downturn.
- The scandal precipitated his resignation as party leader.
- Rising interest rates precipitated a sharp fall in stock prices.
学習者向け例文
- The new tax law precipitated protests in the city.
- His mistake precipitated a big problem at work.
- The war was precipitated by a small border incident.
- The company’s poor safety record precipitated a serious accident.
- The sudden rule change precipitated confusion among students.
adjective
formal
C1
property
2
too sudden and without thought
Happening or done very fast, without enough thinking or planning, and often causing problems.
用法パターン：
a precipitate [decision/action/move]
よくある間違い：
Learners sometimes confuse "precipitate" (formal, about decisions or actions done too quickly) with "precipitous" (usually describing very steep slopes or very sudden decreases). Another mistake is using "precipitate" to describe people directly (e.g., *a precipitate person*); it is more natural to describe their actions or decisions: "precipitate decision", "precipitate action".
類義語
hasty (More common and slightly less formal; often used in everyday speech, while "precipitate" sounds more formal and strong.)
対義語
deliberate (Suggests actions that are carefully planned and thought about, the opposite of "precipitate" actions done too quickly.)
コロケーション
precipitate action
|precipitate decision
|precipitate move
|precipitate withdrawal
|precipitate resignation
テーマ
personality
|decisions
|work
|core_vocabulary
例文
- He later apologized for his precipitate decision to fire half the staff.
- Such a precipitate withdrawal of troops could destabilize the entire region.
- The board warned against any precipitate action that might scare investors.
- Her precipitate resignation left the department without a leader.
- A more cautious approach would have been wiser than their precipitate move into new markets.
学習者向け例文
- It was a precipitate decision, and he soon regretted it.
- The company took precipitate action and closed the office too fast.
- Her precipitate move to another city caused many problems.
- A precipitate answer can make the situation worse.
- They warned him not to make a precipitate choice.
adjective
formal
C1
property
3
very sudden and rapid
Happening very suddenly and very fast, often with a big change.
用法パターン：
a precipitate [fall/decline/drop/change]
よくある間違い：
Learners may mix this sense with the verb "precipitate" meaning "to cause something" and misread sentences like "a precipitate fall" as an action rather than a description. In this meaning, "precipitate" describes the nature of the change (very sudden and quick), not the cause.
類義語
abrupt (Also means sudden, but slightly more common and less formal; "precipitate" often suggests a dramatic or sharp change.)
対義語
gradual (Describes change that happens slowly over time, the opposite of the sudden change implied by "precipitate".)
コロケーション
precipitate fall
|precipitate decline
|precipitate change
|precipitate drop
テーマ
economy
|science
|society
|time
|core_vocabulary
例文
- The company suffered a precipitate fall in profits after the scandal.
- There has been a precipitate decline in public trust in the institution.
- The policy led to a precipitate drop in enrollment numbers.
- Analysts were surprised by the precipitate rise and then fall of the currency.
- Researchers warned of the risks of such a precipitate change in temperature.
学習者向け例文
- The country saw a precipitate fall in oil prices.
- There was a precipitate drop in sales last month.
- The new law caused a precipitate change in people’s habits.
- The team’s success was followed by a precipitate decline.
- Doctors were worried about the patient’s precipitate loss of weight.
名詞
technical
B2
entity
4
solid formed from a solution
A solid that appears and separates from a liquid during a chemical change.
用法パターン：
to form a precipitate
よくある間違い：
Learners may confuse "precipitate" (the solid) with "precipitation" (the process) in chemistry, and with "precipitation" meaning rain in everyday English. In chemistry class, "precipitate" is usually the solid product, not the rain from clouds.
類義語
sediment (Can also mean solid material at the bottom of a liquid, but is less strictly chemical and more general; "precipitate" is the standard technical term in chemistry.)
対義語
solution (In chemistry, a solution is a uniform mixture with no visible solid, the opposite situation to when a precipitate has formed.)
コロケーション
form a precipitate
|white precipitate
|insoluble precipitate
|filter off the precipitate
|yellow precipitate
テーマ
science
|chemistry
|education
例文
- When the two solutions are mixed, a white precipitate forms at the bottom of the test tube.
- The yellow precipitate indicates the presence of lead ions in the sample.
- After the reaction, the precipitate was collected by filtration and dried.
- A cloudy precipitate suggests that an insoluble salt has been produced.
- Students were asked to describe the color and texture of the precipitate.
学習者向け例文
- A white precipitate formed in the test tube.
- The teacher told us to filter out the precipitate.
- We wrote down the color of the precipitate in our notes.
- The reaction made a thick precipitate at the bottom.
- The clear liquid changed, and a solid precipitate appeared.
動詞
technical
B2
action
5
form a solid from solution
To change from being mixed in a liquid to becoming a solid in that liquid, or to make a substance do this, because of a chemical change.
用法パターン：
to precipitate [a substance] (from solution)
よくある間違い：
Learners may not realize that this verb can be both intransitive ("the salt precipitates") and transitive ("heat precipitates the salt"). They also sometimes confuse "precipitate" with "evaporate"; evaporation removes liquid as gas, while precipitation is when a solid forms from a liquid.
類義語
separate (A more general and less technical word for coming apart; "precipitate" specifically refers to forming a solid from a solution in chemistry.)
対義語
dissolve (Means to mix completely into a liquid, the opposite of forming a solid out of the liquid.)
コロケーション
precipitate out of solution
|precipitate from solution
|precipitate calcium carbonate
|precipitate the protein
テーマ
science
|chemistry
|education
例文
- Calcium carbonate will precipitate from the solution when carbon dioxide is removed.
- When the mixture is cooled, crystals begin to precipitate out of the liquid.
- Adding the reagent causes the metal ions to precipitate as a blue solid.
- The protein was precipitated by adding ethanol to the solution.
- If the salt does not fully dissolve, it will not precipitate later in the reaction.
学習者向け例文
- Silver chloride will precipitate from the solution.
- When the liquid cools, small solids precipitate out.
- The teacher showed us how to precipitate the salt.
- The chemist added a chemical to precipitate the metal.
- Some solids precipitate when the solution is heated.
文法
辞書形
precipitate
IPA
GB/pɹɪsˈɪpɪtˌeɪt/
US/pɹɪsˈɪpɪtˌeɪt/
音節・強勢
pre - cip - it - ate （4音節）
Stress on 2nd syllable (cip)
活用形
Adjective
- Base: precipitate
Noun
- Base: precipitate
- Plural: precipitate, precipitates
Verb
- Base: precipitate
- 3rd Person Singular: precipitates
- Present Participle: precipitating
- Past: precipitated
関連語
Forms
precipitates
noun
precipitating
verb
precipitated
verb
Core family
precipitation
noun B2
Related words
precipitous
adjective
precipitously
adverb
表現
precipitate a crisis
1/pɹɪsˈɪpɪtˌeɪt ə kɹˈaɪsəs/
fixed phrase
formal
cause a serious crisis suddenly
To make a very serious problem or emergency start suddenly or earlier than expected.
例文
- The decision to cut funding could precipitate a crisis in the healthcare system.
- His arrest may precipitate a political crisis in the region.
- Experts warned that the new sanctions might precipitate an economic crisis.
precipitate into
1/pɹɪsˈɪpɪtˌeɪt ˈɪntu/
fixed phrase
formal
throw suddenly into a bad state
To make a person, group, or place suddenly be in a bad or difficult situation or state.
例文
- The scandal precipitated the company into financial chaos.
- The sudden collapse of the bank precipitated thousands of families into poverty.
- The announcement precipitated the party into open conflict.
precipitate out of solution
1/pɹɪsˈɪpɪtˌeɪt ˈaʊt əv səlˈuʃən/
phrasal verb
technical
separate as solid from liquid
(Of a substance) to come out of a liquid and become a solid during a chemical change.
例文
- If the temperature is lowered, the salt will precipitate out of solution.
- Proteins may precipitate out of solution when the pH changes.
- The chemist cooled the mixture so that the product would precipitate out of solution.
precipitating factor
1/pɹɪsˈɪpətˌeɪtɪŋ fˈæktɚ/
fixed phrase
technical
direct cause that sets something off
The main event or thing that directly makes something else happen, often something bad like illness or a crisis.
例文
- Stress at work was identified as the main precipitating factor in his breakdown.
- The report lists several precipitating factors that led to the conflict.
- Loss of employment can be a precipitating factor for depression.